libbpf: Fix the use of aligned attribute

Building libbpf sources out of kernel tree (in Github repo) we run into
compilation error due to unknown __aligned attribute. It must be coming
from some kernel header, which is not available to Github sources. Use
explicit __attribute__((aligned(16))) instead.

Fixes: 961632d54163 ("libbpf: Fix dumping non-aligned __int128")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022192502.2975553-1-andrii@kernel.org

diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index e9e5801ece4ca1e3c07d953892df4043bc185c8e..3c19644b5fad22b6812e8629b904f77ce57a4903 100644 (file)
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -1676,7 +1676,7 @@ static int btf_dump_int_data(struct btf_dump *d,
 {
        __u8 encoding = btf_int_encoding(t);
        bool sign = encoding & BTF_INT_SIGNED;
-       char buf[16] __aligned(16);
+       char buf[16] __attribute__((aligned(16)));
        int sz = t->size;
 
        if (sz == 0 || sz > sizeof(buf)) {